Liming Li

ORCID: 0000-0003-0171-3259
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About
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Research Areas
  • Industrial Technology and Control Systems
  • Advanced Measurement and Detection Methods
  • Extenics and Innovation Methods
  • Winter Sports Injuries and Performance
  • Machine Fault Diagnosis Techniques
  • Fault Detection and Control Systems
  • Microgrid Control and Optimization
  • Glass properties and applications
  • Advanced Decision-Making Techniques
  • Advanced Computational Techniques and Applications
  • Material Dynamics and Properties
  • Simulation and Modeling Applications
  • Ferroelectric and Piezoelectric Materials
  • Robotic Locomotion and Control
  • Human Pose and Action Recognition
  • Robot Manipulation and Learning
  • Wind Turbine Control Systems
  • Advanced Algorithms and Applications
  • Robotic Mechanisms and Dynamics
  • Embedded Systems and FPGA Design
  • Smart Grid Energy Management
  • Multilevel Inverters and Converters
  • Structural Health Monitoring Techniques
  • Optimal Power Flow Distribution
  • Emotion and Mood Recognition

Beijing Institute of Technology
2023-2024

China Southern Power Grid (China)
2022

Beijing University of Technology
1996-2020

Shangrao Normal University
2019

Shanghai University of Engineering Science
2014

Shaanxi University of Technology
2010

Beijing Municipal Education Commission
2005

Shaanxi Science and Technology Department
2005

Beijing Polytechnic
1996

The multivariate statistical method such as principal component analysis based on linear dimension reduction and kernel nonlinear the modified are commonly used. Because of diversity correlation robotic global performance indexes, two methods can be used, respectively, to comprehensively evaluate PUMA560 robot with different dimensions. When using method, function parameters directly have an effect result comprehensive evaluation. polynomial is time-consuming inefficient, a new similarity...

10.1177/1729881419896881 article EN cc-by International Journal of Advanced Robotic Systems 2020-07-01

To effectively enhance the adaptability of earthquake rescue robots in dynamic environments and complex tasks, there is an urgent need for a comprehensive evaluation method that encompasses establishing index system, testing performance indexes, conducting evaluation. Firstly, four main criterion twenty-three sub-criterion indexes are established by review existing assessment measures across diverse domains. These validated through test modules developed National Earthquake Response Support...

10.3390/electronics13071401 article EN Electronics 2024-04-08

The temperature dependence of both Stokes and anti-Stokes Raman spectra in a BaTiO3 single crystal was studied. Based on the theory scattering cross-section for one- two-phonon scattering, strong bands at 275 514 cm−1 theX(ZZ)Y geometry are confirmed to be first order. This supports order–disorder model ferroelectric phase transition.

10.1002/(sici)1097-4555(199607)27:7<503::aid-jrs986>3.0.co;2-i article EN Journal of Raman Spectroscopy 1996-07-01

How to express emotions through motion behaviors of robots (mainly for robotic arms) achieve human–robot emotion interactions is the focus this paper. An artificial expression method that accords with human can deal external stimuli and has capability decision-making was proposed based on robot. Firstly, a three-dimensional space established indexes (deviation coefficient, acceleration, interval time). Then, an model, which divided into three parts (the detection processing events,...

10.3390/machines11050533 article EN cc-by Machines 2023-05-06

In the track irregularity detection, acceleration signals of inertial measurement unit (IMU) output which with low frequency components and noise, this paper studied a de-noising algorithm. Based on criterion consecutive mean square error, method for IMU based empirical mode decomposition (EMD) was proposed. This can divide intrinsic functions (IMFs) derived from EMD into signal dominant modes noise modes, then reflecting important structures were combined together to form partially...

10.4236/jsip.2014.54013 article EN Journal of Signal and Information Processing 2014-01-01

The purpose of this paper is to propose a suitable comprehensive evaluation method for motion similarity humanoid robot. Different robot operation tasks with different complexity degree were selected. indexes arm used in the fields robotics and ergonomics. A static model was established based on projection pursuit method. However, only single time point without dimension. dynamic method, information entropy degrees, proposed by linearly weighting index weight at each according...

10.1177/0954406220909410 article EN Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science 2020-03-26

Based on the statistical characteristics analysis of random noise power and autocorrelation function, this paper proposes a de-noising method for track state detection signal by using Empirical Mode Decomposition (EMD). This is used to reduction refactoring first Intrinsic Function (IMF) component in accordance with “random sort-accumulation-average-refactoring" order. Signal function are determine cut-off point dominant mode. was applied test signals actual inertial unit signals;...

10.4236/jtts.2014.44029 article EN Journal of Transportation Technologies 2014-01-01

In order to design an effective and reliable RS485 bus protocol based on bus, this paper introduces the structure transmission mode of command frame response frame, also introduce four control measures communication in process quality system. The is open, tolerant, fast, can realize ignition more accurate intelligent initiation

10.1051/matecconf/201710003003 article EN cc-by MATEC Web of Conferences 2017-01-01

The efficiency index is an important evaluation basis to measure the research level of quadruped robot. For scientific robot with numerous indexes, finished which includes system, comprehensive method and result's analysis three parts, theoretical for robotic design improvement provided. First, Analytic Hierarchy Process (AHP) used build robot's describing from abilities survival, motion, operation, environment interaction four parts. Then, embedding fuzzy expert as constraint in projection...

10.1109/robio.2017.8324784 article EN 2021 IEEE International Conference on Robotics and Biomimetics (ROBIO) 2017-12-01

The temperature dependence of both Stokes and anti-Stokes Raman spectra in a BaTiO3 single crystal was studied. Based on the theory scattering cross-section for one- two-phonon scattering, strong bands at 275 514 cm−1 theX(ZZ)Y geometry are confirmed to be first order. This supports order–disorder model ferroelectric phase transition.

10.1002/(sici)1097-4555(199607)27:7<503::aid-jrs986>3.3.co;2-9 article EN Journal of Raman Spectroscopy 1996-07-01

In recent years, as a powerful supplement to large power grid, microgrid can meet the requirements of new energy consumption and has been applied in many practical projects. process access distribution network at present, there are problems network. Among these problems, planning substation with is one most important be solved urgently. this paper, model considering established first, including determination number optimization location, which principle equal load moment minimization...

10.1088/1755-1315/252/3/032025 article EN IOP Conference Series Earth and Environmental Science 2019-07-08

Revealing the relations among parallel mechanism and robot comprehensive performance, topological structure dimension is basis to optimize mechanism. Due correlation diversity of single performance indexes, statistical principles linear reduction nonlinear were introduced into analysis evaluation for typical mechanisms robots. Then mechanism’s with best could be selected based on principal component (PCA) kernel (KPCA) respectively. Through comparing results, KPCA reveal relationship...

10.1115/detc2015-47032 article EN 2015-08-02

The key to improve the properties and intelligent controlling level of a machine is optimize mechanical major mechanisms, while core problems are how evaluate reasonably control fine. Due complexity diversity, single performance indexes closed-chain mechanism were analyzed based on principal component analysis (PCA) method. Then comprehensive evaluation index was integrated. A crank-rocker which kind typical proposed, method studied. And scientific research basis for synthesis optimum order...

10.1109/mec.2013.6885582 article EN 2013-12-01

The key to improve the properties and intelligent controlling level of a machine was optimize mechanical major mechanisms, while core problems were how evaluate reasonably control fine. Due complexity diversity, single performance indexes closed-chain mechanism analyzed based on principal component analysis (PCA) method. Then comprehensive evaluation index integrated. A crank-rocker which kind typical proposed, method studied. And scientific research basis for synthesis optimum order...

10.1109/mace.2012.375 article EN International Conference on Mechanic Automation and Control Engineering 2012-07-27

Addressable initiation system was established by bus topology structure and information coding which owns the ability to safely reliably control up 256 initiators on a signal according communication protocol is robust two-way command response type protocol. Also, digital achieved between intelligent controller smart initiator multiplexed serial data bus. The synchronous performance of addressable researched. result shows that each will built-in logic control, arm electronic safe switch after...

10.1051/matecconf/201710003002 article EN cc-by MATEC Web of Conferences 2017-01-01

Variable frequency transformer (VFT), a new type of flexible alternating current transmission equipment, is easier to operate under dual-side harmonic distorted grid voltages for its windings are directly connected two power grids. This paper presents novel topology non-grid-side-converter-based VFT (NGSC-VFT). Operations proposed NGSC-VFT ideal and harmonically polluted detailed. Control strategy series converters eliminate the torque fluctuations at different frequencies. The effectiveness...

10.1109/icpsasia55496.2022.9949968 article EN 2022 IEEE/IAS Industrial and Commercial Power System Asia (I&amp;CPS Asia) 2022-07-08
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